Accession Number : ADA031902

Title :   Viscosity Measurements of Potential High Density Hydrocarbon Fuel Blends.

Descriptive Note : Final rept. Dec 73-Dec 74,

Corporate Author : AIR FORCE AERO PROPULSION LAB WRIGHT-PATTERSON AFB OHIO

Personal Author(s) : Lander,Herbert R. , Jr. ; Strouse,Alfred E.

Report Date : JUN 1976

Pagination or Media Count : 134

Abstract : The principle problems associated with the use of RJ-5 (Shelldyne-H) as a missile fuel is its high viscosity, particularly at 0 F and below. Chemically, this material can be described as the hydrogenated dimer of norbornadiene (HNBD). Using the Model 17 Weissenberg Rheogoniometer, the viscosity of pure RJ-5 and blends of RJ-5 and other hydrocarbons was determined over a temperature range from -65 F to + 70 F. The hydrocarbons evaluated as viscosity improvers when added to Shelldyne-H include toluene, JP-4, methylcyclohexane, tetralin, decalin, RJ-4 (tetrahydro-methylcyclopentadiene dimer) and isobutylbenzene. The concentrations studied were 5, 10, 25, and 35 and 50 weight percent diluent in RJ-5. Toluene blends were found to be the most effective in reducing low viscosity while retaining volumetric heating values at significantly high levels. It is concluded that considerable progress is possible in the high density missile fuel area through the blending of hydrocarbon components. Present high density fuels, such as RJ-5 can be tailored to yield fuels with properties which are more adaptable to suitable system designs for low temperature application and yet have significantly more volumetric energy (higher density) than conventional hydrocarbon fuels. (Author)

Descriptors :   *JET ENGINE FUELS, *VISCOSITY, GUIDED MISSILES, LOW TEMPERATURE, MIXTURES, HYDROCARBONS, HIGH DENSITY, CYCLOHEXANES, CYCLIC COMPOUNDS, DIMERS, TOLUENES, NAPHTHALENES, BENZENE COMPOUNDS, CYCLOPENTENES, HEPTANES.

Subject Categories : FUELS

Distribution Statement : APPROVED FOR PUBLIC RELEASE

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